Lucy O'Brien joined Town in the summer of 2020, having spent time at the Cambridge United ACC and MK Dons RTC. 

She progressed well through the Town Academy and made her senior debut against Billericay Town in April 2021, becoming a key member of the side. 

Lucy played a key role at the top end of the pitch during the club's promotion from the FAWNL Southern Premier Division in 2024/25, scoring the opening goal as Town beat Plymouth Argyle 3-1 at Portman Road in front of 10,807 supporters.